Medical cannabis became legal in the UK in 2018. Access requires a specialist...

https://theboringmagazine.com/the-unglamorous-truth-about-getting-a-uk-cannabis-prescription/

Medical cannabis became legal in the UK in 2018. Access requires a specialist assessment and proof of prior treatments that failed to manage your condition. Most patients now use private clinics for this process. It is a clinical, evidence-based route.